This line chart displays daily temperatures in San Francisco over time, with a smooth curve plotted using D3 v5’s `line` generator and `curveBasis`. The visualization renders as an SVG, using `scaleTime` and `scaleLinear` for axes, with gridlines via `axisLeft` and `axisBottom`. Data comes from a CSV file loaded through D3’s `csv` function, with timestamps parsed as dates and temperatures as numbers. Styling via external CSS sets the stroke color and font sizes.